On 11/29/2011 02:01 PM, Gordan Bobic wrote:
One other thing - one of the manifestations of this bug appears to be
random memory corruption (strange, I know - unless I am dealing with two
totally unrelated problems). Specifically, I have seen the bug manifest
during compile jobs where, for example, linking would segfault, and
re-making would segfault again. But doing:
echo 3 > /proc/sys/vm/drop_caches
would fix the problem.
My first suspicion was duff hardware/RAM on my AC100. So I got another
one, and it behaves in the exact same way.
The most likely explanation is that you've got a data race somewhere.
SMP ARM, unlike x86, has a weakly-ordered memory model. Unless
everyone is extremely careful, problems like the one you're describing
are very likely.